Corner fitting and container using the same

ABSTRACT

An corner fitting for container provided at each angle part of the container body and connected with other parts of the container body comprises a sealing device arranged thereon which includes a first flange of a predefined length provided on one of the inner side surface and the top/bottom surfaces of the corner fitting. The sealing device of the present invention also contains a second flange of a predefined length provided on the other of the inner side surface and the top/bottom surfaces of the corner fitting and aligned with the first flange. Therefore, the seal gasket which is provided with circumstance of the container gate, can depend on the flanges of the present invention while closing the gate, thus hermetic performance for the container is greatly improved. Moreover, it is possible for the container to reduce the thickness of the upper or the lower horizontal member to approximate that of the top plate or bottom plate so as to obtain the largest volume without inclining the bottom plate of the container.

FIELD OF THE INVENTION

[0001] The present invention relates to a transport tool, in particular to a container and its improved corner fitting structure.

BACKGROUND OF THE INVENTION

[0002] In the structure of container, a kind of corner fitting is often used to connect with the other members of the container structure into a complete container body. FIG. 1 is a schematic diagram of a prior art corner fitting 10, which has side surfaces 12, a bottom surface 14, and a top surface 16. The corner fitting utilizes its own surfaces to connect with other members of the container body 20. FIG. 2 is a schematic diagram showing part of the container connected by corner fittings. The upper corner fittings 10 a, 10 b are connected with the upper horizontal member 22 of the container body 20 through their inner side surfaces 12 a and 12 b, and are connected with the corner post 24 of the container body 20 through their bottom surfaces 14 a and 14 b, while the lower corner fittings 10 c and 10 d are connected with the lower horizontal member 26 of the container body 20 through their inner side surfaces 12 c and 12 d, and are connected with the corner post 24 through their top surfaces 16 c and 16 d. Therefore, the space confined by the upper and lower horizontal members 22 and 26 and the corner post 24 determines the size of the container gate. In practice, it is always desired that the gate size of the container body 20 is as large as possible so as to facilitate loading and unloading. For example, in the prior art container structure, one can try to reduce the thickness of the upper horizontal member 22 or that of the lower horizontal member 26 to approximate the thickness of the top plate 28 or the bottom plate (not shown) of the container body 20. However, when the thickness of the top plate 28 or the bottom plate (not shown) is less than that of the corner fitting 10, sealing of the container cannot be ensured at the inner side of the corner fitting 10. There is seal gasket on the circumference of the gate of the container body 20. Since no sealing structure is provided at the inner side of the corner fitting, the seal gasket provided on the circumference of the gate of the container body 20 haven't any surface to rest on, resulting in a bad sealing of the container body.

SUMMARY OF THE INVENTION

[0003] Accordingly, the present invention is directed to an corner fitting with a sealing structure arranged thereon to ensure a good sealing effect for the container body. Another object of the present invention is to provide a goods container, which can ensure a large-size gate plate design and can prevent goods damages more effectively through an improved corner fitting structure.

[0004] Additional features and advantages of the invention will be set forth in the description which follows and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0005] To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, an corner fitting for container provided at each angle part of the container body and connected with other parts of the container body comprises a sealing device arranged thereon which includes a first flange of a predefined length provided on one of the inner side surface and the top/bottom surfaces of the corner fitting. The sealing device of the present invention also contains a second flange of a predefined length provided on the other of the inner side surface and the top/bottom surfaces of the corner fitting and aligned with the first flange. The two flanges can be further connected with each other at the corner of the corner fitting. The two flanges of the present invention are arranged in the middle of the inner side surface and the top/bottom surfaces, can extend sidewise to keep flush with the inner side surface and the top/bottom surfaces of the corner fitting respectively, and can further extend to either side of the flange to have a length equal to that of the surface matched with the corner fitting. The flanges have a rectangular or a trapezoidal or an arc-shaped cross-section.

[0006] In another aspect of the present invention, a goods container provided with an upper horizontal member, a lower horizontal member, two corner posts, and corner fittings connected with the horizontal members and two corner posts respectively, wherein the corner fitting is arranged a sealing device having a first flange of a predefined length provided on one of the inner side surface and the top/bottom surfaces of the corner fitting. The sealing device of the present invention also comprises a second flange of a predefined length provided on the other of the inner side surface and the top/bottom surfaces of the corner fitting, the second flange being in alignment with the first flange. The two flanges are connected with each other at the corner of the corner fitting. The two flanges of the goods container of the present invention are arranged in the middle of the inner side surface and the upper/lower surfaces, can extend sidewise to keep flush with the inner side surface and the upper/lower surfaces of the corner fitting respectively, and can further extend to either side of the flange to have a length equal to that of the surface matched with the corner fitting. The flanges have a rectangular or trapezoidal or an arc-shaped cross-section. Thus, the upper and lower horizontal members of the goods container of the present invention can be arranged at the ends of the flange or on the flange, so that the thickness of the upper and lower horizontal members can be reduced to approximate that of the top plate or the bottom plate, increasing thus the size of the container gate as large as possible.

[0007] In a further aspect of the present invention, an corner fitting for container, the corner fitting is provided at each angle part of the container body and connected with other parts of the container body, and has a sealing device arranged thereon which contains a first flange of a predefined length provided on the inner side surface of the corner fitting; a second flange of a predefined length provided on the top/bottom surfaces, and aligned with the first flange. The two flanges of the present invention can be arranged in the middle of the inner side surface and the top/bottom surfaces of the corner fitting respectively, and can extend sidewise to keep flush with the inner side surface and the top/bottom surfaces of the corner fitting respectively, and can further extend to either side of the flange to have a length equal to that of the surface matched with the corner fitting. The flanges have a rectangular or trapezoidal or an arc-shaped cross-section.

[0008] In a further aspect of the present invention, a goods container comprises an upper horizontal member, a lower horizontal member, two corner posts, and corner fittings connected with the upper/lower horizontal members and the two corner posts respectively, wherein the corner fitting is arranged a sealing device having a first flange of a predefined length provided on the inner side surface, a second flange of a predefined length provided on the top/bottom surfaces of the corner fitting and aligned with the first flange. Preferably, the two flanges of the goods container of the present invention are arranged in the middle of the inner side surface and the upper/lower surfaces, can extend sidewise to keep flush with the inner side surface and the upper/lower surfaces of the corner fitting respectively, and can further extend to either side of the flange to have a length equal to that of the surface matched with the corner fitting. Thus, the upper and lower horizontal members of the goods container of the present invention can be arranged at the ends of the flange or on the flange, so that the thickness of the upper and lower horizontal members can be reduced to approximate that of the top plate or the bottom plate, increasing thus the size of the container gate as large as possible.

[0009] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention.

[0011] In the drawings:

[0012]FIG. 1 is a perspective view of an corner fitting according to a related art;

[0013]FIG. 2 a schematic diagram showing part of the container body connected with the prior art corner fitting;

[0014]FIG. 3A is a perspective view for the first embodiment of an corner fitting of the present invention with the flange provided on its bottom surface;

[0015]FIG. 3B is a perspective view for the second embodiment of the corner fitting of the present invention with the flange having a length equal to that of the bottom surface;

[0016]FIG. 3C is a perspective view for the third embodiment of the corner fitting of the present invention with the flange on its bottom surface extending sidewise;

[0017]FIG. 3D is a perspective view for the fourth embodiment of the corner fitting of the present invention with the flange provided on its inner side surface;

[0018]FIG. 3E is a perspective view for the fifth embodiment of the corner fitting of the present invention with the flange having a length equal to that of the inner side surface;

[0019]FIG. 3F is a perspective view for the sixth embodiment of the corner fitting of the present invention with the flange on its inner side surface extending sidewise;

[0020]FIG. 4 is a perspective view for the seventh embodiment of the corner fitting of the present invention with the corner fitting provided on the left-side upper part of the container and flanges provided on its inner side surface and bottom surface;

[0021] FIGS. 5-6 are the perspective views for the eighth embodiment of the corner fitting of the present invention with the flanges extending sidewise to keep flush with the surface matched with the corner fittings;

[0022] FIGS. 7-8 are the perspective views for the ninth embodiment of the corner fitting of the present invention with the flange on the left-side upper part of the container having a length equal to that of the surface matched with the corner fitting;

[0023] FIGS. 9-10 are the perspective views for the tenth embodiment of the corner fitting of the present invention with the flange extending sidewise and having a length equal to that of the surface matched with its corner fitting;

[0024]FIG. 11 is schematic diagram showing the container body connected with the corner fittings of the present invention.

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

[0025] All the four angle parts of the gate plate of the container should be provided with corner fittings as to be a bearing part. The preferred embodiments of the present invention described here take the corner fitting on the left-side upper part of the container gate as an example for illustrations. Referring to FIG. 3A, the first embodiment of the present invention is to arrange the sealing device, which is the flange 40 of a predefined length, on the bottom surface 32 of the corner fitting 30. The flange 40 can also extend sidewise to its either end to have a length equal to that of the bottom surface, as is shown in FIG. 3B. Of course, the flange 40 can be arranged at any position on the bottom surface according to the practical design of the container body, such as the position in the middle part shown in FIG. 3A, and can also extend to keep flush with the bottom surface, as is shown in FIG. 3C. It is clear that the corner fitting 30 on whose bottom surface a flange is arranged can be provided on the left-side and the right-side upper part of the container body.

[0026] According to the present invention, the flange 50 can also be arranged on the inner side surface 34 of the corner fitting 30. As shown in FIG. 3D, a flange 50 of a predefined length is arranged in the middle of the inner side surface. Of course, the flange can extend to its either side, as is shown in FIG. 3E, to have a length equal to that of the inner side surface 34, and can also extend sidewise to keep flush with the inner side surface 34.

[0027] The flange according to the present invention, whether it is provided on the bottom surface or on the inner side surface, can butt against the seal gasket when the container gate is closed, resulting thus in a very good sealing effect.

[0028] Similarly, to illustrate the more extensive applicability of the technical solution of the present invention, FIG. 4 shows a preferred embodiment of the corner fitting arranged on the left-side upper part of the container body. The sealing devices are the flange 60 and the flange 70 arranged simultaneously on the inner side surface and the bottom surface, which are kept in alignment with each other and extend separately sidewise to connect with each other at the corner of the corner fitting 30. Thus, the sealing device of the present invention gets in close contact with the gate seal gasket, resulting in a very good sealing effect. In the preferred embodiment shown in FIG. 4, the sealing device is provided in the middle of the inner side surface and the bottom surface, and the flanges 60 and 70 are arranged to be of a predefined length, i.e., a length less than the length of the surface on which the corner fitting is situated. A gap is provided between the ends of the two flanges, forming thus the container body 100 of the present invention. Referring to the schematic assembly diagram in FIG. 11 and FIG. 4, the upper horizontal member 102 can be arranged at the end 62 of the flange 60, and the corner post 104 on the left side of the container body can be arranged at the end 72 of the flange 70.

[0029] Of course, the flanges 60 and 70 according to the present invention can also extend sidewise to keep flush with the inner side surface34 and the bottom surface32 respectively, as is shown in FIG. 5. The lengths of the flanges are shorter than the length of the inner side surface 34 and the length of the bottom surface 32 respectively. Besides, it is clear from FIG. 6 that the flange is fixed with the corner fitting through welding.

[0030] It is shown from the preferred embodiment of FIG. 7 that the flanges 60 and 70 can also extend to their two ends respectively to have a length equal to that of the inner side surface and that of the bottom surface. In the container of this embodiment, the upper horizontal member 102 and the left-side corner post 104 as shown in FIG. 11 should be fixed on the flanges 60 and 70. It is understandable that the flange can be integrated with the corner fitting, as is shown in FIG. 8.

[0031] The flange in FIG. 9 extends sidewise to keep flush with the surface matched with corner fitting, and can also extend fully to its either end to have a length equal to that of the surface matched with the corner fitting. Of course, the flange in this embodiment can be also integrated with the corner fitting.

[0032]FIG. 11 is a schematic diagram showing the back-view structure of the container body having the corner fittings according to the present invention. The upper horizontal member 102 of the container body 100 can be directly arranged on the ends of the flange or on the flange itself using the corner fittings at the four angle parts of the container. As is shown in the figure, according to the technical solution of the present invention, the flanges 60 and 70 are arranged, with respect to the left-side upper part corner fitting 30 a and the right-side upper part corner fitting 30 b, on the inner side surface and the bottom surface respectively, while the flanges 60 and 70 are arranged, with respect to the left-side lower part corner fitting 30 c and the right-side lower part corner fitting 30 d, on the inner side surface and the top surface respectively. Therefore, the thickness of the upper horizontal member 102 arranged on the flange end can be reduced to approximate that of the top plate of the container body 100, and the thickness of the lower horizontal member 106 arranged on the flange end can be reduced to approximate that of the bottom plate of the container body, so that the size of the container gate is nearly equal to the inner size of the container body 100, and a larger applicable volume can be obtained without any inclination of the bottom plate of the container body 100.

[0033] As described above, the corner fitting of the present invention has the following advantages.

[0034] First of all, since the arrangement of sealing flanges on at least one inner surface of the corner fitting, the seal gasket provided with circumstance of the container gate can depend on the flanges of the present invention while closing the gate, that is, it is defined between the gate and the flanges. Thus hermetic performance for the container is greatly improved.

[0035] Also, through the arrangement of sealing flanges on corner fittings, it is possible to reduce the thickness of the upper or the lower horizontal member to approximate that of the top plate or bottom plate, so that the container gate has a size close to the inner size of the container body, obtaining thus the largest volume without inclining the bottom plate of the container.

[0036] While the present invention has been described with reference to preferred embodiments, it is understandable that certain modifications and variations may be made thereto by those who are skilled in the technical field of the present invention without deviating from the spirit of the present invention to facilitate the application of the corner fitting to other transport tools such as the semi-trailer, which needs the arrangement of corner fittings on each angle part as bearing components, or other variations may be made to the sealing device of the present invention such that the cross-section of the flange is made to be of the form of a trapezoid, an arc or other forms without departing from the scope as set forth in the appended claims. 

What is claimed is:
 1. An corner fitting for containers, provided on each angle part of the container body and connected with other parts of the container body, wherein said corner fitting comprises a sealing device provided with a first flange of a predefined length, arranged on one of the inner side surface and the other of the top/bottom surfaces of said corner fitting.
 2. An corner fitting according to claim 1, wherein said sealing device further comprises a second flange of a predefined length, arranged on the other of the inner side surface and the top/bottom surfaces of the corner fitting and aligned with the first flange.
 3. An corner fitting according to claim 2, wherein said two flanges connect with each other at the corner of said corner fitting.
 4. An corner fitting according to claim 2, wherein said two flanges are arranged in the middle of the inner side surface and the top/bottom surfaces.
 5. An corner fitting according to claim 4, wherein said first flange and said second flange extend sidewise to keep flush with the inner side surface and the top/bottom surfaces of said corner fitting respectively.
 6. An corner fitting according to claim 1, wherein said first flange has a length less than or equal to that of said inner side surface.
 7. An corner fitting according to claim 2, wherein said second flange has a length less than or equal to that of said top/bottom surface.
 8. An corner fitting according to claim 2, wherein said flange has a rectangular or trapezoidal cross-section.
 9. An corner fitting according to claim 2, wherein said flange has an arc-shaped cross-section.
 10. A goods container, comprising an upper horizontal member, a lower horizontal member, two corner posts, and corner fittings connected with said two horizontal members and said corner posts, wherein said corner fitting is further provided with a sealing device comprising a first flange of a predefined length, arranged on one of the inner side surface and the top/bottom surfaces of said corner fitting.
 11. A container according to claim 10, wherein said sealing device further have a second flange of a predefined length provided on the other of the inner side surface and the top/bottom surface of said corner fitting and is in alignment with said first flange.
 12. A container according to claim 11, wherein said two flanges connect with each other at the corner of said corner fitting.
 13. A container according to claim 10, wherein said first flange has a length less than that of said inner side surface.
 14. A container according to claim 13, wherein the upper/lower horizontal members of said container body is provided at the ends of said first flange.
 15. A container according to claim 10, wherein said first flange has a length equal to that of said inner side surface.
 16. A container according to claim 15, wherein the upper/lower horizontal members of said container body is provided on said first flange.
 17. A container according to claim 11, wherein said second flange has a length less than that of said top/bottom surface.
 18. A container according to claim 17, wherein the corner post of said container body is arranged at the ends of said second flange.
 19. A container according to claim 11, wherein said second flange has a length equal to that of said top/bottom surface.
 20. A container according to claim 19, wherein the corner post of said container body is arranged on said second flange.
 21. An corner fitting for containers, provided on each angle part of the container body and connected with other parts of the container body, wherein said corner fitting is further provided with a sealing device comprising a first flange of a predefined length provided on the inner side surface of said corner fitting; a second flange of a predefined length provided on the top/bottom surfaces and aligned with said first flange.
 22. An corner fitting according to claim 21, wherein said first flange and said second flange are arranged in the middle of the inner side surface and the top/bottom surfaces of said corner fitting respectively.
 23. An corner fitting according to claim 22, wherein said first flange and said second flange extend sidewise to keep flush with the inner side surface and the top/bottom surfaces of said corner fitting respectively.
 24. An corner fitting according to claim 21, wherein said first flange has a length less than or equal to that of said inner side surface.
 25. An corner fitting according to claim 24, wherein said second flange has a length less than or equal to that of said top/bottom surface.
 26. An corner fitting according to claim 21, wherein said flange has a rectangular or trapezoidal cross-section.
 27. An corner fitting according to claim 21, wherein said flange has an arc-shaped cross-section.
 28. A goods container comprising an upper horizontal member, a lower horizontal member, two corner posts, and corner fittings connected with said two horizontal members and said corner posts, wherein said corner fitting further comprises a first flange of a predefined length provided on the inner side surface of said corner fitting; a second flange of a predefined length provided on the top/bottom surfaces of said corner fitting and aligned with said first flange.
 29. A container according to claim 28, wherein said first flange and said second flange are arranged in the middle of the inner side surface and the top/bottom surfaces of said corner fitting respectively.
 30. A container according to claim 29, wherein said first flange and said second flange extend sidewise to keep flush with the inner side surface and the top/bottom surfaces of said corner fitting respectively.
 31. A container according to claim 28, wherein said first flange has a length less than that of said inner side surface.
 32. A container according to claim 31, wherein the upper/lower horizontal members are arranged on the ends of said first flange.
 33. A container according to claim 28, wherein said first flange has a length equal to that of said inner side surface.
 34. A container according to claim 33, wherein the upper/lower horizontal members are arranged on said first flange.
 35. A container according to claim 28, wherein said second flange has a length less than that of said top/bottom surface.
 36. A container according to claim 35, wherein the corner post of said container body is provided at the ends of said second flange.
 37. A container according to claim 28, wherein said second flange has a length equal to that of said top/bottom surface.
 38. A container according to claim 37, wherein the corner post of said container body is provided on the second flange. 